Center-selvage mechanism or attachment for looms.



A. A. GORDON, Jn. GENTEE SELVAGE MEGEANISM 0E ATTACHMENT EOE Looms.

APPLICATION FILED NOV. 2B, 1908.

,n E. l c l A. A. GORDON, Jn. CENTER SBLVAGE MEGHANISM 0R ATTACHMENT ronLooms.

'APPLICATION FILED NOV. 2B, 1908.

936,445 Patented Oct. 12, 1909.

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ALBERT A. GORDON, JR., OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON6c KNOWLES LOOM WORKS, A CORPORATION or ivrnsseorrusnrrs.

CENTER-SELVAGE MECHANISM OR ATTACHMENT FOR LOOMS.

Specification of Letters Patent.

Patented Oct. 12, 1909.

Application led November 28, 1908. Serial No. 464,882.

To all whom 'it may concern.'

Be it known that I, ALBERT A. GORDON, Jr., a citizen of the UnitedStates, residing at I/Vorcester, in the county of Worcester and State ofMassachusetts, have invented certain new and useful Improvements inCenter-Selvage Mechanism or Attachments for Looms, of which thefollowing is a speciflcation.

My invention relates to a center selvage mechanism, or attachment forlooms, to be used in making center selvages, where two or more widths ofthe fabric are woven on one loom at the same time.

The object of my invention is to improve upon center selvage mechanismsas ordinarily made, and more particularly on that class of centerselvage mechanism in which the needles, carrying the selvage threads,have a vertical, and a rocking or pivotal motion from side to side in avertical plane.

In my improvements I Vprovide a center selvage mechanism in which theneedles, instead of having a rocking or pivotal motion in a verticalplane, as is customary, to carry them out of a perpendicular plane, havea partial rotary motion in a horizontal plane around a lixed axis, tocarry them from one position to another, without moving` them out of aperpendicular plane My invention consists in certain novel features ofconstruction of my improvements as will be-hereinafter fully described.

I have only shown in the drawings a detached portion of a loom frame,with my improvements in center selvage mechanism combined therewith,sufcient to enable those skilled in the art to understand theconstruction and operation thereof.

Referring to the drawings F igure 1 is a side view of a center selvagemechanism embodying my improvements, and a lay, and harnesses shown insection, looking in the direction of arrow a, Fig. 3. Fig'. 2corresponds to Fig. 1, but shows the lay in its rear position and theshed open. Fig. 3 is a front view of the selvage mechanism, looking inthe direction of arrow Z), Fig. 1. Fig. 4 shows the parts shown in thelower portion of Fig. 2, looking in the direction of arrow c, same gure.Fig. 5 is a section, on line 5, 5, Fig. 3, looking in the direction ofarrow al, same ligure. Fig. 6 is a section, on line 6, 6, Fig. 3,looking in the direction of arrow el, same gure; the broken lines showthe extreme opposite positions of the arm shown by full lines. Fig. 7 isa section, on line 7, 7, Fig. 3, looking in the direction of arrow d,same ligure. Fig. 8 shows a detached piece of the fabric, having acenter selvage formed by my center selvage mechanism. Y

In the accompanying drawings, 1 is the lay beam, 2 is the reed, 3 thehand-rail, 4 and 5 two vertically extending harnesses, which form theshed in the usual way.

6 and 7 are two sets of warp threads, which with the filling threads 8,Fig. 8, form the woven fabric shown in said ligure.

9 is a detached part of the loom arch.

' I will now describe my improvements.

At the rear side of the loom arch 9, at a point where it is' desired toform the center selvage 011 the fabric woven on the loom, is bolted, inthis instance a downwardly extending arm or bracket 10, havinga boss 10at its lower end. In the boss 10 is secured the upper end of avertically extending rod 11. The lower end of the rod 11 has securedthereon a block 12. In the block 12 is secured, in this instance, theupper ends of three downwardly extending wires .13, which form guidesfor the warp threads 6, and 7, which form selvages.

rIhe rod 11 has loosely mounted thereon two bosses or hubs 14 and 14, ona vertically extending bar or plate 14. The lower end of the bar orplate 14 has secured thereto the upper ends of two vertically anddownwardly extending needles 15. The lower end of each needle 15 has aneye 15 therein, through which passes a selvage thread 16, which leadsfrom the fabric through a thread eye 14a, see Fig. 7, on the lower end14 of the bar 14, and upwardly through an open eye 14h, see Fig. 4, onthe upper end of the bar 14, and through a spring' actuated tension eye14d, to two spools 17, and 17, respectively. The spools 17, and 17 arerotatably and adjustably mounted on oppositely extending rods 18 on astand 18, which has a hub 1S", which is adjustably fastened by a setscrew 18"' on the rod 11, see Fig. 5. The spools 17 and 17' for theselvage threads 1G, are provided with a suitable tension mechanism,which in this instance consists of a helically coiled expansion spring19 encircling a rod 18' at its outer end, and bearing at one end againstthe outer end of the spool, and at the other end against an adjustingscrew 20, see Fig. 5.

A helically coiled expansion spring 21 encircles the rod 11, and bearsat one end against the boss or hub 14 on the upper end of the bar 14,and at its other end against a collar 22, adj ustably secured by a setscrew 23, see Fig. 7, on the rod 11. The spring 21 acts to move the bar14 up to its highest position, as shown in Fig. 1.

Each one of the two harnesses 4, and 5, have a hook 4', and 5',respectively. A flexible connection 24 is attached at one end to thehook 4', and in this instance is hooked through a hole 14C' in therearwardly extending arm 14c on the bar 14, so as not to slide throughsaid hole, and the other end of the iiexible connection 24 is attachedto the hook 5', see Fig. 4. The hooks 4 and 5' are located on theharnesses 4 and 5, on opposite sides of the selvage mechanism, and at afixed distance apart from the selvage mechanism. Each downward movementof the harnesses 4 or 5, causes the bar 14 to be drawn down, against theaction of the spring 21, see Fig. 2, and also causes the bar 14 to havea partial rotary motion on the rod 11, to the left or right, shown bybroken lines in Fig. 6, according to whether the harness 4, or theharness 5, is moved downwardly. The partial rotary movement of the bar14 carries with it the vertically extending selvage needles 15, securedto the lower end of said bar, to cause the needles to change theirposition, relative to the warp threads passing between the guide wires13, and to carry the selvage threads 16 irst to one side and then theother side of the selvage warp threads. The partial rotary movement ofthe bar 14 is limited, and can be adjusted, in this instance by two setscrews 25, see Fig. 7 held in side extensions 22" on a collar 22 fast onthe rod 11.

The operation of my improvements in center selvage mechanism, from theabove description in connection with the drawings, will be readilyunderstood by those skilled in the art. When the lay is in its rearposition, shown in Fig. 2, the harnesses have formed the open shed, andthrough the connection 24 to the arm 14C on the bar 14, the bar 14, withthe needles 15, is moved to its lowest position, to carry the selvagethreads 16 to the lower plane ci" the warp threads; the shuttle is nowthrown through the shed,

and on the forward movement of the lay, and when the harnesses changethe shed, as shown 1n Fig. 1, the needle bar 14 will be raised throughthe action of the spring 21,

and the selvage needles 15 will come above the upper plane of the warpthreads, as shown in Fig. 1. As the other harness moves downwardly,through the connection 24 to the arm 14c on the bar 14, said bar 14 willhave a partial rotary movement in a horizontal plane communicatedthereto, to carry the selvage threads 16 over the warp threads, to theother side of the warp threads, and on the next backward movement of thelay, when the harnesses open the shed again, the needles will be carrieddownwardly on the opposite sides of the warp threads, so as to have thefilling laid in again, and this operation will be repeated. As the loomcontinues to operate, the fabric will be woven with the center selvage,as shown in Fig. 8, as will be well understood by those skilled in theart.

The advantages of my improvements will be readily appreciated by thoseskilled in the art.

By communicating to the needles carrying the selvage threads, a. partialrotary motion Y in a horizontal plane, to one side, and then to theother side of the warp threads, instead of a rocking motion, said'needles are always maintained in a perpendicular plane, and will raiseand lower the selvage threads in a perpendicular plane, instead of in aninclined plane.

1t will be understood that the details of construction of myimprovements may be varied if desired.

Having thus described my invention, what 1 claim as new and desire tosecure by Letters Patent is 1. 1n a center selvage motion, a needlesupport carrying the selvage needles and having an up and down movementin a vertical plane, and al partial rotary movement in a horizontalplane, and means for communicating to said needle support a movement ina vertical plane, and means for communicating to said needle support apartial rotary movement in a horizontal plane.

2. In a center selvage motion, the combination with a stationary supportcarrying wires or guides for the warp threads which form the selvage, ofa support carrying needles for the selvage threads, and means forcommunicating to said support carrying the needles, an up and downmovement in a vertical plane on said stationary support and a partialrotary movement in a horizontal plane, and means for adjusting saidrotary movement. j Y

3. 1n a center selvage motion, the combination with a stationarysupport, carrying wires or guides for the warp threads which form theselvage, and a. spool support secured to said stationarT support, of asupto move down said needle support and communicate a partial rotarymovement in a 10 port carrying needles for the selvage threads,horizontal plane to said needle support.

said support for said selvage threads mounted on said stationarysupport, a spring to raise said needle support, and Connectionsintermediate said needle support and two shed forming harnesses, andsaid harnesses,

ALBERT A. GORDON, JR.

llitnesses JOHN C. DEWEY, M. HAAS.

